US11946641B2 - Spark ignited pilot for gas burner - Google Patents
Spark ignited pilot for gas burner Download PDFInfo
- Publication number
- US11946641B2 US11946641B2 US17/333,076 US202117333076A US11946641B2 US 11946641 B2 US11946641 B2 US 11946641B2 US 202117333076 A US202117333076 A US 202117333076A US 11946641 B2 US11946641 B2 US 11946641B2
- Authority
- US
- United States
- Prior art keywords
- gas
- gas tube
- spark
- outlet end
- ignited
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 23
- 239000012212 insulator Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910007271 Si2O3 Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/14—Radiant burners using screens or perforated plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
- F23Q3/008—Structurally associated with fluid-fuel burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q9/00—Pilot flame igniters
- F23Q9/02—Pilot flame igniters without interlock with main fuel supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2207/00—Ignition devices associated with burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/22—Pilot burners
Definitions
- the device described herein is in the field of spark ignited pilots for gas fueled burners.
- Gas fired pilots are commonly used to start gas fired infrared burners used in food preparation as well as other applications.
- a typical pilot includes a metal gas supply tube mounted in association with a pair of electrodes forming a spark gap immediately above the gas tube outlet. Applying a voltage to one of the two electrodes while grounding the other can produce a spark in the gap thereby igniting gas coming from the tube.
- This document describes a spark-ignited, gas-fueled pilot that may be used in combination with a gas fired burner wherein the pilot includes a bracket providing a mount for pair of spark gap electrodes as well as a metal gas supply tube and further wherein the metal gas supply tube is jacketed by a ceramic tube that is longer than the portion of the gas tube extending above the bracket surface.
- the gas supply tube is recessed into the ceramic jacket, the result being a significant increase in the useful life of the pilot.
- gas shall be construed to mean natural gas, propane, and other commonly available flammable gaseous products.
- FIG. 1 is a view of an exemplary pilot assembly including a mounting bracket, spark gap igniter electrodes, a jacketed gas supply tube and a sensor probe;
- FIG. 2 is a sideview of the pilot assembly partly sectioned to show the recess of the gas tube relative to the surrounding ceramic jacket;
- FIG. 3 is a perspective view of an infrared gas fire burner as an illustration of how the pilot assembly can be found in an industrial application.
- a gas-fired, spark-ignited pilot assembly 10 is shown to comprise a metal support member in the form of a bracket 12 .
- a small diameter gas supply tube 14 having a surrounding ceramic jacket 16 in direct contacting association therewith.
- the jacket 16 rests on the top surface of the bracket and has a length which is greater than the length of the gas supply tube above the surface of the bracket 12 such that the outlet end 18 of the gas supply tube is recessed into the jacket 16 and below the top surface thereof by appropriately 0.030′.
- the bottom edge of the ceramic jacket is sealed around the joint with the bracket surface as shown.
- a spark gap ignitor for the pilot assembly 10 comprises an L-shaped high voltage electrode 22 and a grounded electrode 24 arranged relative to the electrode 22 so as to define a spark gap which is close to the outlet of the pilot gas tube 14 and the top of the jacket 16 .
- the high voltage electrode 22 is mounted within a ceramic insulator 26 which extends through and is attached to the bracket 12 with a suitable connector 15 for attachment to a high voltage supply.
- the assembly 10 further comprises a sensor probe 27 of heat sensitive metal extending through a ceramic insulator 28 which is attached to and extends through the bracket 12 .
- the probe 27 is known in the art and senses heat from the pilot assembly when it is active; i.e. that the gas being emitted from the end of the tube 14 and jacket 16 and has been ignited and is burning.
- the ceramic jacket 16 does not serve any purpose as an insulator, does not extend through the bracket 12 , but, rather, is sealingly attached to the top planar surface thereof.
- the inside diameter of the jacket 16 is such as to produce a close fit with the gas supply tube 14 .
- the preferred ceramic for the jacket 16 is alumina but other ceramics such as Si2O3 can also be used.
- the outside diameter of the ceramic jacket 16 is on the order of 3 ⁇ 8′′ whereas the outside diameter of the gas tube 14 is on the order of 3/16′′, these dimensions being representative of a typical device and not intended to be limiting.
- the recess is on the order of 0.030′′ in a pilot assembly having the aforementioned dimensions.
- FIG. 3 shows in perspective an infrared burner 30 having a generally rectangular metal housing 32 with an inlet 34 for a fuel/air mixture.
- the housing 32 makes up a plenum chamber in which the fuel and air are thoroughly mixed and are emitted upwardly and outwardly through a assembly comprising a porous open cell medium 36 through which the distributed fuel/air mixture passes and is ignited by the pilot assembly 10 which is shown attached by means of the bracket 12 to a side of the housing 32 with the gas tube, outlet and the ignitor electrodes located close to the surface of the medium 36 .
- a more detailed description of the burner 30 can be found in the co-pending application Ser. No. 16/454,509 filed Jun. 27, 2019 and entitled “Gas-fired Infrared Burner”, the complete disclosure of which is incorporated herein by reference.
Abstract
Description
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/333,076 US11946641B2 (en) | 2021-05-28 | 2021-05-28 | Spark ignited pilot for gas burner |
CA3153694A CA3153694A1 (en) | 2021-05-28 | 2022-03-30 | Spark ignited pilot for gas burner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/333,076 US11946641B2 (en) | 2021-05-28 | 2021-05-28 | Spark ignited pilot for gas burner |
Publications (2)
Publication Number | Publication Date |
---|---|
US20220381431A1 US20220381431A1 (en) | 2022-12-01 |
US11946641B2 true US11946641B2 (en) | 2024-04-02 |
Family
ID=84178967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/333,076 Active 2042-09-08 US11946641B2 (en) | 2021-05-28 | 2021-05-28 | Spark ignited pilot for gas burner |
Country Status (2)
Country | Link |
---|---|
US (1) | US11946641B2 (en) |
CA (1) | CA3153694A1 (en) |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3174534A (en) | 1962-03-26 | 1965-03-23 | American Gas Ass | Spark ignition system for gas burners |
US3196928A (en) | 1961-09-28 | 1965-07-27 | Hupp Corp | Ignition system and control for fuel burner |
US3947231A (en) | 1973-06-11 | 1976-03-30 | Texaco Inc. | Pilot light system for lighting a main burner for heating high velocity high pressure turbulent air |
US3986817A (en) | 1975-04-09 | 1976-10-19 | General Electric Company | Grid burner pilot igniter |
US4141213A (en) | 1977-06-23 | 1979-02-27 | General Motors Corporation | Pilot flame tube |
US4215979A (en) | 1978-03-01 | 1980-08-05 | Toyota Jidosha Kogyo Kabushiki Kaisha | Ignition torch |
US4242080A (en) | 1978-08-11 | 1980-12-30 | Honeywell Inc. | Safety device for gas burners |
US4251205A (en) | 1978-04-29 | 1981-02-17 | Messer Griesheim Gmbh | Device for igniting the fuel gas of a flame cutting machine |
US4315729A (en) * | 1978-03-02 | 1982-02-16 | Matsushita Electric Industrial Co., Ltd. | Gas burner |
US4626196A (en) | 1985-09-23 | 1986-12-02 | Harper-Wyman Company | Spark ignited gas burner |
US4806095A (en) | 1985-02-13 | 1989-02-21 | Quantum Group, Inc. | Fuel valve control system |
US5813845A (en) * | 1996-12-04 | 1998-09-29 | Saint-Gobain/Norton Industrial Ceramics Corporation | Curved silicon-carbide based burner nozzle for use with gaseous fuel flames |
US6139311A (en) * | 1998-01-20 | 2000-10-31 | Gas Research Institute | Pilot burner apparatus and method for operating |
US6345979B1 (en) * | 1997-11-25 | 2002-02-12 | Maxon Corporation | Oxygen-fuel pilot with integral ignition |
US20100108659A1 (en) * | 2008-10-31 | 2010-05-06 | Intek Manufacturing Llc | Method and apparatus for transferring heat to a surface |
US20140080072A1 (en) * | 2012-09-14 | 2014-03-20 | Eclipse, Inc. | Method and apparatus for a dual mode burner yielding low nox emission |
US20150354810A1 (en) * | 2014-06-04 | 2015-12-10 | Rinnai Corporation | Premixing apparatus |
-
2021
- 2021-05-28 US US17/333,076 patent/US11946641B2/en active Active
-
2022
- 2022-03-30 CA CA3153694A patent/CA3153694A1/en active Pending
Patent Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3196928A (en) | 1961-09-28 | 1965-07-27 | Hupp Corp | Ignition system and control for fuel burner |
US3174534A (en) | 1962-03-26 | 1965-03-23 | American Gas Ass | Spark ignition system for gas burners |
US3947231A (en) | 1973-06-11 | 1976-03-30 | Texaco Inc. | Pilot light system for lighting a main burner for heating high velocity high pressure turbulent air |
US3986817A (en) | 1975-04-09 | 1976-10-19 | General Electric Company | Grid burner pilot igniter |
US4141213A (en) | 1977-06-23 | 1979-02-27 | General Motors Corporation | Pilot flame tube |
US4215979A (en) | 1978-03-01 | 1980-08-05 | Toyota Jidosha Kogyo Kabushiki Kaisha | Ignition torch |
US4315729A (en) * | 1978-03-02 | 1982-02-16 | Matsushita Electric Industrial Co., Ltd. | Gas burner |
US4251205A (en) | 1978-04-29 | 1981-02-17 | Messer Griesheim Gmbh | Device for igniting the fuel gas of a flame cutting machine |
US4242080A (en) | 1978-08-11 | 1980-12-30 | Honeywell Inc. | Safety device for gas burners |
US4806095A (en) | 1985-02-13 | 1989-02-21 | Quantum Group, Inc. | Fuel valve control system |
US4626196A (en) | 1985-09-23 | 1986-12-02 | Harper-Wyman Company | Spark ignited gas burner |
US5813845A (en) * | 1996-12-04 | 1998-09-29 | Saint-Gobain/Norton Industrial Ceramics Corporation | Curved silicon-carbide based burner nozzle for use with gaseous fuel flames |
US6345979B1 (en) * | 1997-11-25 | 2002-02-12 | Maxon Corporation | Oxygen-fuel pilot with integral ignition |
US6139311A (en) * | 1998-01-20 | 2000-10-31 | Gas Research Institute | Pilot burner apparatus and method for operating |
US20100108659A1 (en) * | 2008-10-31 | 2010-05-06 | Intek Manufacturing Llc | Method and apparatus for transferring heat to a surface |
US20140080072A1 (en) * | 2012-09-14 | 2014-03-20 | Eclipse, Inc. | Method and apparatus for a dual mode burner yielding low nox emission |
US20150354810A1 (en) * | 2014-06-04 | 2015-12-10 | Rinnai Corporation | Premixing apparatus |
Also Published As
Publication number | Publication date |
---|---|
CA3153694A1 (en) | 2022-11-28 |
US20220381431A1 (en) | 2022-12-01 |
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